(Looks like I'll be keeping my MK-66 for awhile, but I think I'll step down to a 1.25" diagonal.)
Intes 2" Deluxe compression-ring Star Diagonal w/1.25" compression-ring adapter (w/caps). This would cost you $240+$20 = $260 new. Both of diagonal and adapter are in like-new condition, even the barrel since it was used in a compression ring accessory.
$170 shipped in US. PayPal or US Postal Money Order preferred. (SOLD)
(Some may recall that I was not sure that this was the Deluxe model when I listed it for sale with my MK-66 Deluxe. When I got the diagonal second-hand but unused it was billed as 1/20-wave, but it isn't marked in any way to distinguish it as the Deluxe version. This is typical for Intes--even the MK-66 Deluxe just has a red "De Luxe" sticker for the tube. However, I just inspected the coatings under a bright light, and I'm convinced the coatings are dielectric due to the translucent purple reflections of a bright shop light at some shallow angles--it's similar with an Endurobrite secondary I have. 1/20-wave ==> Deluxe version and dielectric coatings ==> Deluxe version.)